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Trusted Plumbing & HVAC Services in Silver Spring, MD
Established in 1891, Thomas E Clark Inc has built a legacy of excellence in plumbing, heating, and air conditioning services across Maryland, Virginia, and Washington, D.C. As a family-owned business, we combine over 120 years of experience with a commitment to quality, reliability, and customer satisfaction. Our team of technicians averages over 20 years of expertise, utilizing top-tier materials and advanced training to deliver precise, efficient solutions.

We prioritize transparency through upfront pricing, comprehensive warranties (2 years on installations, 1 year on repairs), and a no-service-fee policy when repairs are completed. Backed by memberships in prestigious organizations like the Washington Master Plumbers Association and ACCA, we uphold industry standards while fostering long-term trust through integrity and personalized service.
Services
Plumbing Heating Air Conditioning Drain Cleaning Free Lead Water Pipe Replacement
Highlights and features
  • We offer over 120 years of combined experience in plumbing and HVAC services.
  • Our team includes technicians with 20+ years of specialized expertise.
  • We provide 2-year warranties on all new installations and 1-year on repairs.
  • Our no-service-fee policy waives trip charges when repairs are completed.
  • We maintain industry-leading standards through weekly training and apprenticeship programs.
Associations and certifications
  • Washington Master Plumbers Association
  • Associated Builders and Contractors
  • Air Conditioning Contractors of America
  • National Comfort Institute
What people say
Excellent service Great service Positive Responsiveness Professionalism Value
Services
Plumbing
Our plumbing services cover repairs, installations, and maintenance for residential and commercial properties. We specialize in leak detection, pipe repairs, and system overhauls using high-quality materials. With 24/7 emergency support and advanced techniques, we ensure minimal disruption while maintaining long-term system efficiency and safety.
Heating
We provide heating system installations, repairs, and maintenance, including furnaces, boilers, and heat pumps. Our energy-efficient solutions reduce costs while ensuring consistent warmth. Customized assessments and prompt service guarantee optimal performance, even in extreme weather conditions across Maryland, Virginia, and DC.
Air Conditioning
Our air conditioning services include AC installations, repairs, and maintenance for homes and businesses. We prioritize energy efficiency and indoor air quality, offering tailored solutions for various makes and models. Regular maintenance plans extend system lifespan while ensuring peak performance during warmer months.
Drain Cleaning
We tackle stubborn drain blockages with state-of-the-art equipment, preventing damage to piping systems. Regular maintenance services reduce future clogs, minimizing repair costs. Our proactive approach ensures clean, functional drains for both residential and commercial properties in the DMV area.
Free Lead Water Pipe Replacement
Under the LPRAP program, we replace lead pipes to ensure safe drinking water. Our team handles assessments and installations with minimal disruption, adhering to strict safety regulations. This service eliminates health risks associated with lead contamination while improving water delivery efficiency.
Questions
What services does Thomas E Clark Inc offer?
We specialize in plumbing, heating, air conditioning, drain cleaning, and free lead water pipe replacement services for residential and commercial clients.
Are emergency services available?
Yes, we provide 24/7 emergency services to address urgent plumbing and HVAC issues promptly.
Do you offer warranties on your services?
Yes, we provide a 2-year warranty on new installations and a 1-year warranty on repairs.
What areas do you serve?
We serve Maryland, Virginia, Washington, D.C., and surrounding regions with comprehensive HVAC and plumbing solutions.
Is there a service fee for repairs?
No, we waive trip charges if repairs are completed during the visit, excluding emergency services.